Joseph cochkan



J. COCHRAN SMOKE FILTER Fil ed Got. 27. 1624 June 9, 1925.

Patented June 9, 1925.

UNITED" STATES.

JOSEPH ooonaeu, or DULUTH, MIQNNESOTAF SMOKE FILTER.

Application filed October 27, 1924. Serial No. 745,948.

To all whom 2'25 may concern: .7

Be it known that I, J osnrrr COGI-IRAN, a citizen of the United States,residing at Duluth, in the county of St. Louis and State of Minnesota,have invented certain new and useful Improvements in Smoke Filters, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates to attachments for smoke fines, and has specialreference to a combination draft regulating and soot collecting devicefor installation preferably intermediate of a domestic furnace andupright chimney or fine.

The principal object is to provide a novel form of soot collector anddraft regulator whereby economy in fuel consumption is obtained, and aconvenient means of precipitating' and scavenging the soot intermediateof the furnace and the upright flue.

Other objects and advantages of the invention will appear in the furtherdescription thereof.

Referring now to the accompanying drawing in which like referencecharacters indicate like parts; a

Figure 1 is a central vertical section of the device as applied to afurnace, the latter being shown in fragmental elevation;

Figure 2 is a top plan view of the draft regulator and collector; and

Figure 3 is a side elevation of same.

The draft and soot receptacle comprises a vertically elongated,preferably rectangularly shaped body portion 1, having fixed thereto,upon the back side thereof and adjacent the up Jer end, the smokedischarge thimble (gentrally of the opposite or front side, and somewhatabove the lower end thereof, is attached the intake thimble 3, whilespaced intermediate of the latter and the upper end of the receptacle isthe inclined draft thimble 4. This latter is provided with a hingedlyunited damper or closure 5 which is controlled in any desired manner asfor example by a suspending chain 6, so that the damper may be openedand closed as desired.

Into the thimble 3 is attached the pipe 7 leading from the furnace S andthe receptacle is preferably placedas closely to the furnace 8 as ispractical; a close juxtapositioning of same to the furnace giving thebest possible results.

The depending lower portion 9 of the re-' ceptacle 1 provides a chamberfor "the deposit of soot and other granular products of.

combustion thatmayfall therein, and, for

convenient access to the receptacle 1, there is provided the hinged door10 upon one side thereof and above the chamber so that on opening thisdoor the deposits in the chamber may be conveniently removed. 7

A vertically disposed baffle 11 is formed Within the receptacle 1 and isspaced from the opening through the draft thimble t said baffleextending upwardly either to the top of the receptacle or curved as at12 towards the thimble 4 and above same, so as to deflect the cold airas it enters the thimble 4 downwardly and into the path of the productsof combustion as they come from the furnace; the lower extremity of thebattle occurring approximately at the center of the opening through thethimble 3.

In this manner when the damper 5 is opened the ingoing cold air willmeet the warm or hot air from the furnace and chill same as theyinteriningle just below the end of the baffle 11 and the enlargedchamber 9, where, due to the cessation of draft and chilling of theproducts of combustion any granular substance therein will beprecipitated within the receptacle and collect with in the chamber 1).Furthermore it is apparent thatthe air within the receptacle 1 will bewarmer in the upper end thereof than in the lower end, so that in theevent of any natural tendency for cold air to return to-the furnacethrough the lower portion of the flue 7 the same will take placeautomatically and thus improve the con ditions of initial combustionwithin the furnace, resulting obviously in a saving of fuel; thisspecific feature being well known and old in the art as discharginglines of furnaces are frequently equipped with cold air admittingappliances upon the under side thereof. However to applicants knowledgethey have never been used in combination with a soot collectingreceptacle which received the cold air in the upper end thereof, orabove the incoming hot air orifice.

From the foregoing it is evident that I have produced acombinationdevice which results in a double functioning of the admissionof cold air into a furnace flue, and having thus described my invention,what I claim and desire to secure by Letters Patent, is:

1. The combination with a furnace flue of the character described, of anupright hollow receptacle into which the flue discharges adjacent thelower end thereof, a discharge orifice adjacent the upper end of thereceptacle, and controllable means'for admitting cold air into thereceptacle.

2. The combination with a furnace flue of the character describe-d, ofan, upright hollow receptacle into which the flue discharges adjacentthe lower end thereof, a discharge orificeadjacent the upper end of thereceptacle, a controllable cold'air inlet above the intake orifice fromthe furnace, and a bafiie for'directing the cold air as t enters thereceptacle into the the furnace.

3. The combination with a smoke flue of the character described, of areadily accessible chamber installed therein, and a controllable coldair inlet within the chamber above the inlet of the fine from thefurnace.

path of the hot air from In testimony whereof I hereunto a-iiix mysignature.

JOSEPH COOI-IRAN.

